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Response kinetics of temperature independent resistive oxygen sensor formulations : a comparative study

Title data

Sahner, Kathy ; Moos, Ralf ; Izu, Noriya ; Shin, Woosuck ; Murayama, Norimitsu:
Response kinetics of temperature independent resistive oxygen sensor formulations : a comparative study.
In: Sensors and Actuators B: Chemical. Vol. 113 (2006) Issue 1 . - pp. 112-119.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2005.02.035

Official URL: Volltext

Abstract in another language

This contribution compares the response kinetics of two temperature-independent resistive oxygen sensor formulations: LaCu0.3Fe0.7O3−δ (LCF) and La0.05Sr0.95Ti0.65Fe0.35O3−δ (LSTF). Screen-printed thick film sensor specimens were prepared. Sensor characteristics towards oxygen were determined, and additional measurements in the frequency domain were realized: the former indicate a fast and nearly temperature-independent response of LCF and LSTF compositions in the temperature range between 750 and 900 °C. The latter allow conclusions on the underlying sensing mechanism. Whereas oxygen sensitivity of LSTF is exclusively controlled by a reaction step, response of LCF is governed by reaction only at lower temperatures. At higher temperatures, a diffusion process becomes limiting. This different behavior is attributed to different microstructures of the sensitive films.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 26 Jan 2015 09:37
Last Modified: 06 Apr 2016 06:36
URI: https://eref.uni-bayreuth.de/id/eprint/6003